This CAN Filter 18 in 1 for and for universal filter should be added to the car after odometer adjustment for most chassis models. But for W222/W205/W447 models, should be added before odometer adjustment.This filter is universal for multiple car models, small and convenient, easy operate, with stable performance and reliability.For Model:18 types chassis model for : S(222), S(221), C(205), C(204), V(W447), E(W212), E(W207), A(W176), G(W463), ML(W166), SL(R231), (X166), B(W246), (W218), (R172), (W197), CLA(W117), (X204)New style: 222/205/217Old style: 166/212/463CHECK the car model correctly before mileage adjustment.Old style W166 short circuit to GNDNew style W222 short circuit to GNDFor Model:For : CAS4/FEM FxxFor 1 series F2X, 3 series F3X, X5 etc., FEM mileage adjustment( no need to remove FEM, connect directly to instrument panel);For 5 series F10, 7 series F01/02 etc., CAS4 Fxx chassis.( F01, F02, F07, F18, F10, F20, F25, X3 etc., applicable for 9S12 XEP series 5M48H/1N35H).NOTICE! Please connect the 2 dots together (short circuit) BEFORE connection to the car!Colour:green & orangeMaterial:ABSThe actual product may have slight color difference or difference, which will not affect the usePackage Contents:1 x CAN FilterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.